#define refresh_width 16
#define refresh_height 16
static unsigned char refresh_bits[] = {
   0x00, 0x00, 0xe0, 0x03, 0xe0, 0x03, 0xe0, 0x03, 0xe0, 0x03, 0xfe, 0x3f,
   0xfe, 0x3f, 0xfe, 0x3f, 0xfe, 0x3f, 0xfe, 0x3f, 0xe0, 0x03, 0xe0, 0x03,
   0xe0, 0x03, 0xe0, 0x03, 0x00, 0x00, 0x00, 0x00};